Rotary gas-engine.



H. R. NOYES.

ROTARY GAS EN APPLIGATION FILED r GINE.

Patented Feb. 6, 1912.

2 SHEETS SHEET 1.

H. R. NOYES.

ROTARY GAS ENGINE.

APPLICATION FILED 113.13, 1909.

1,16,764. f Patented Feb.6,1912.

T 2 SHEETS-SHEET 2.

I Zh Mentor:

HAZLEHURST R. NOYES, 0F SAVANNAH, GEORGIA.

Ro'rAnY GAS-ENGINE.

Specification of Letters Patent.

Patented Feb. 6, 1912.

Application led February 13, 1909. Serial No. 477,617.

To all whom t may concern Be itknown that I, HAzLEHURs'r R. Norns, acitizen of the United States, and resident of Savannah, and State ofGeorgia, have invented certain Improvements in Rotary Gas-Engines, ofwhich the following is a specification.

My invention. relates to gas engines, and more particularly to rotarygas engines of the' two-cycle type, wherem gas generated from gasolenein a vaporizer, or other gas, may be economically and eliiciently usedas a motive agent.

My object is to provide a rotary gas engine of the two-cycle type,having a minimum number of part-s compactly and simply arranged, andadapted to furnish motive power at a minimum cost.

With this object in view, my invention consists in the novelconstruction and combination of parts, as hereinafter described withreference to the accompanyin drawings, and more particularly pointe outin the claims. r

In the drawings: Figure l is a central transverse section -of an engineembodying my invention; Fig. 2 is a longitudinal section thereof; Fig. 3is an end elevation; Fig. 4 is an end elevation of the rotary carrier orabutment; andv Figs. 5 and 6 are details of the sliding pistons.

Referring to the drawings, in which the same reference characters relateto the same or corresponding parts in all the views, mounted within acasing E is a rotary carrier or abutment F secured to a driving shaft Gjournaledv in suitable bearings in the heads E closing the ends of thecasing E. Extending from the opposite sides of the casing E are suitablelugs or ears H, throu h whichpass bolts I into a suitable bedate orfoundation I forming the support for the engine.

The rotary carrier F is of circular cross section, and preferably coredor recessed, as shown at P, on opposite sides, to lighten the same, andis provided with suitable packing on the opposite ends bearing againstthe headsl E of the cylinder, as usual in this type of engines.

The interior of the casin E isa mixed contour of a circular arc and anellipse, the upper portion for slightly more than ninety degrees, or apstituting the clrcular arc, and the remainder county of Chatham,

Figs. 5 and duct the mixed air and roximately a quadrant, c on-lfollowing the contour of an ellipse. This rot-ary carrier or abutment Fis in close contact throughout the' circular arc at the top, and intangential Contact only at the bottom, thus dividing the casing into twochambers Q. and Q on opposite sides of the carrier or abutment, ofsubstantially crescent shape, as shown clearly in Fig.- 1, one of thesechambers serving as a compression chamber and the other as an explosionchamber. Slidably mounted in suitable recesses at equidistant pointsaround t-he circumference of the rotary carrier are three pistons L,

L2, L3, each of which is composed of twoV sections dove-tailed together,as 'shown in- 6, two springs N bein seated in recesses in the oppositesections .1n alinement, as shown in Fig. 6, tending to press thesections apart, thereby maintainin the edges in contact with thecylinder hea s.

In order to press the piston outward when the engine is at rest andatthe beginning or commencement of the rotary movement, I provide twolhelical springs M seated in recesses O in the piston wings, and having'their inner ends bearing upon the bot-toms of the recesses in theArotary carrier. After the engine is in operation, the function of thesesprings is afl'ected by the centrifugal force, which tends to throw thepiston, wings outwardly against t-he interior surface of the chamber.The walls ofthe Casing or cylinder E are hollow, providing a space K forthe. introduction of a cooling medium, such as Water, as ordinarily usedin this type of machines.

, The letter A indicates an inlet pipe which is adapted to receive itssupplyfrom a vaporizer and mixer,

gas through an inlet opening A" into the compression chamber Q of theengine, the latter being connected through a port B and Ipipe B to thetransmission valve chamber T', containing the transmission valve T whlchcontrols the transmission of gas mixture from the said compression'chamber Q to the explosion chamber Q by way of the pipe C and port C.vThe pipe C is provided with an ordinary check valve V to prevent theback-flow of gas from said explosion chamber. Lo-` cated at a vsuitabledist-ance from the admission ort C of the` explosion chamber is asuitable spark plug S which is adapted to spark and fire the explosivemixture as not shown, and con-.

the ,piston wings L, L2, L3 successively pass the same, the sparkingdevice shown forillustration simply being of the jump-spark type. At theopposite end of the vexplosion chamber to the inlet admission port C, isthe exhaust D, through which the' spent gases pass into the atmosphereor elsewhere.

The piston wings L', L2, La are so disposed that, as each wing passesthe gasy inlet port A, it closes the chamber Q to further admission ofgas and begins to compress the gas contained therein, continuing suchcompression until the piston in advance orv the active pressure lpistonhas passed. the compressed gas admission port C and approaches thesparking device, the parts being so proportioned that this point will bereached when the active compressing piston has traveled aboutthree-quarters the distance between the gas admission port A and thecompressed gas outlet port B. At this time the valve gear operates toopen the'valve T to permit the compressed gas to pass into the explosionchamber. A

Referring to Fig. 3, it will be observed that this valve gear comprisesessentially a three-point cam R mounted upon the shaft coperating withan oscillating rod U' pivotally supported on the cylinder head E andnormally pressed into contact .with the cam by a spring W, which rod isconnected by suitable means, such as a link u, with a sleeve X slidablymounted on the cylinder head E carrying, at its upper end, a pivotedtrip adapted to be operated by a stop y fixed to the cylinder head. Thistrip is so arranged, it will be observed, as to engage a sleeve ycarried by the valve rod Y, a spring a," interposed between the sleeve yand the lower end of the valve chamber T operating toquickly seat thevalve T when the cam has passed the admission point, and the trip wreleased from the sleeve y.

It.A will be.v observed from the to provide a simple and ecient-compression of the gas by one sliding piston, the transfer of suchcompressed gas into an independentr explosion chamber where thesuccessive volumes' of com ressed gas are ignited and exploded in rapidVsuccession as the series of plstons pass, first, the gas admission portof the gas compression chamber, second, the compressed gas admissionport for the explosion chamber, and, third, the spark plug. The impetusgiven to each piston as ,the explosion occurs is sufiicient to impartrapid rotative movementv to the rotary "carrier, and thereby' to thedrive shaft.

I claim as my invention:

1. In a rotary gas engine, the combination of a rotary carrier, a casingin which said carrier is mounted so as to rotate and 'with whose innerface the carrier contacts atl opposite points `so as to dividetheinteforegoingv descriptlon that the arrangement is such asl rior of thecasing into two chambers, one on each side of the carrier, an inlet andoutlet for each chamber whereby one chamber will constitute acompression chamber' and the other a combined explosion and exhaustchamber, a series of pistons slidably mounted within the carrier andlcontacting at all times with the inner surface of the casing, a valvedconnection outside of the chambers between the delivery of thecompression chamber and the inlet of the'explosion chamber, meanswhereby the rotating carrier is caused tooperate said valve atintervals, and means for exploding the compressed mixture in theexplosion chamber whereby it will drive forward the piston in advance ofit and will cause said piston to drive from the exhaust the spent gasesahead of it.

2. In a rotary gas engine, the combination of a casing with an internalcontour comprising Aan elliptical section and approximately a quadrantof a circular sectlon, a rotary carrier mounted in the casing with itsperiphery in close contact with t e circular section -and in tangentialcontact at the opposite side ofthe casing whereby said carrier dividesthe casing into two chambers, one on each side thereof, one chamberservingas a compression chamber and the other as an explosion chamber, aplurality of sliding pistons mounted in said carrier and in const-antcontact with the inner face of thecasing, an inlet and outletcommunicating with each lchamber within the casing, a valved passageconnecting the outlet of the compression chamber to the inlet of theexplosion chamber, means whereby the carrier is caused to operate thevalve in said passage at intervals, and means for exploding the mixturein the explosion chamber.

3. In a rotary gas engine, the combination with a casing of a driveshaft, a rotary carrier mounted upon said drive shaft and dividing thecasingI into twov chambers on opposite sides of the carrier, pistonsslidably mounted in lsaid carrier, a conduit connecting the twochambers, a casing having a valve therein interposed in said conduitbetween the chambers, a valve rod by which said valve is carried, a camon the drive shaft for operating the valve, connections between thevalve rod and the cam whereby the valve is` operated and causedperiodically to permit the How of compressed gas said carrier, a conduitconnectin vthe two chambers, a Ivalve` interposed in sald conduitbetween the chambers, a valve rod, means acting thereon to close thevalve, a cam on the drive shaft, a slide operated by said cam, a trip onsaid slide for engaging the valve rod, and a Stop for engaging said tripandv releasing it from engagement with the valve rod when the Valve hasreached the limit of its opening movement, thereby p( :mitting low ofcompressed, gas from one chamber 10 to the other vof the casing, andmeans for In testimony whereof, I have signed my name to thisspecification, in the presence of two subscrlbmg Wltnessevs.

I-IAZLEHURST R. NOYES.

Witnesses:

WM. L. GIGUILLIAT, T. F. CooK.

